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Finding the Fourth Proportional to 539,109.38, 806,981.30 and 397,114.76

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Solution

The fourth proportional to 539,109.38, 806,981.30 and 397,114.76 is: 594,432.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,109.38 : 806,981.30 = 397,114.76 : x
  2. Step 2: Convert to fraction form
    539,109.38/806,981.30 = 397,114.76/x
  3. Step 3: Cross multiply
    539,109.38x = 806,981.30 × 397,114.76
  4. Step 4: Simplify right side
    539,109.38x = 320,464,185,273.99
  5. Step 5: Solve for x
    x = 320,464,185,273.99/539,109.38
  6. Step 6: Final answer
    x = 594,432.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.